12728786

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 22794240

約数和(自身を除く): 10065454

約数列:

[1, 2, 7, 14, 31, 62, 139, 211, 217, 278, 422, 434, 973, 1477, 1946, 2954, 4309, 6541, 8618, 13082, 29329, 30163, 45787, 58658, 60326, 91574, 205303, 410606, 909199, 1818398, 6364393, 12728786]

約数ペア:

[(1, 12728786), (2, 6364393), (7, 1818398), (14, 909199), (31, 410606), (62, 205303), (139, 91574), (211, 60326), (217, 58658), (278, 45787), (422, 30163), (434, 29329), (973, 13082), (1477, 8618), (1946, 6541), (2954, 4309)]